a = {'Alice': 85, 'Bob': 92, 'Charlie': 100, 'David': 78, 'Eve': 100,
     'Frank': 90, 'Grace': 98, 'Heidi': 100, 'Ivan': 88, 'Judy': 95}

b = {}
for key, value in a.items():
    if value == 100:
        b[key] = value
if len(b) == 0:
    print("没有学生考满分")
else:
    print(b)

